Minimal Match — 50.4% match
based on chemical composition and mechanical property overlap.
BS 970 EN8M (BS 970:1955) and IS 4432 10C8S10 (IS 4432:1988) are both steel grades.
Both fall under the Free Machining Steel category.
BS 970 EN8M is typically used for high volume turned parts, automotive components, while IS 4432 10C8S10 is commonly used for forgings and fabrication of case-hardened machine or automobile parts.
BS 970 EN8M is defined under British Standards (BS), originating from United Kingdom, while IS 4432 10C8S10 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, BS 970 EN8M vs IS 4432 10C8S10 is a 75.6% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 50.4%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
BS 970 EN8M
IS 4432 10C8S10
Tensile Strength
≥541 MPa (35 tons/sq in, converted)
Not specified
Yield Strength
≥278 MPa (18 tons/sq in, converted)
Not specified
Elongation
≥20%
Not specified
Hardness
152-207 HB
Not specified
Condition
Normalised, ruling section 6 in (lowest-strength condition of the standard)
Not specified
Core Tensile Strength
Not specified
600-850 MPa (16 mm) / 550-800 MPa (30 mm)
Core Yield Strength
Not specified
>=400 MPa (16 mm) / >=330 MPa (30 mm)
Core Elongation
Not specified
>=12% (16 mm) / >=14% (30 mm)
Core Reduction of Area
Not specified
>=35% (16 mm) / >=40% (30 mm)
Hardness, annealed (A)
Not specified
<=150 HB
Typical Applications
BS 970 EN8M
High volume turned parts, automotive components
IS 4432 10C8S10
Forgings and fabrication of case-hardened machine or automobile parts
Can BS 970 EN8M Be Substituted With IS 4432 10C8S10?
BS 970 EN8M and IS 4432 10C8S10 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
What is the difference between BS 970 EN8M and IS 4432 10C8S10?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN8M be substituted with IS 4432 10C8S10?
BS 970 EN8M and IS 4432 10C8S10 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.